Being an amateur pin trader myself, I have about 12 pins, I can't attest to the "value" of the 9/11
DVC pins, but I do have a story about being approached.
We were in the pin area in the Sorcerer's Hat at MGM, where pin traders sometimes hang out. A husband and wife, actually, were talking to various people trading from their "trading lanyard." I heard her say, she does these trades to help other people to get them into pin trading. She approached me and DH , after I had noticed her checking us out, and asked if we were interested in trading with her. She then said, " This is my regular trading lanyard to trade with anyone, here is my SPECIAL lanyard to trade for special pins. I see you and your husband have many of the same pins, would you be interested in trading." The only pin that we had that hadn't been bought, was our DVC 9/11 pin. Due to reading here on the DIS, I knew about how few of them were mailed out and I considered myself lucky to have one. Also, being from NJ and a former employee at the WTC, I lost many friends on 9/11 and wouldn't part with this pin for my life. I knew she was interested in the DVC 9/11 pin and politely declined any trade. DH and I still laugh about the pin trader trying to "take advantage" of such lowly pin collectors like ourself. It was actually very funny, and the pin trader wasn't underhanded in anyway. Any CM I see, always askes me about my DVC 9/11 pin and asks where I got it. I tell them and then show them the back, they are very intrigued with it, as I guess it is very rare.